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Old 12-12-2017, 02:33 PM
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Originally Posted by qcrc View Post
I hear great things about these motors. I can't wait to buy a few. What are people using for a FDR for a 21.5 touring car and for a roll out for 17.5 1/12th?
Thanks
For a 21.5 I'm running a 3.69fdr with timing at 48d, this is on a larger outdoor track. I'd say drop a tooth or two if your running on a smaller track.
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Old 12-15-2017, 04:30 AM
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Originally Posted by lagcisco View Post
Is this motor analyzer the only thing I need to dyno test/tune these motors like you guys are?
https://www.amainhobbies.com/gforce-...SABEgI81fD_BwE
Try RCJuice.com they have the SKYRC version on sale right now for $69.99 and "FREE" shipping.


https://www.rcjuice.com/root-catalog...r-checker.html
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Old 12-15-2017, 08:50 AM
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Originally Posted by lagcisco View Post
Is this motor analyzer the only thing I need to dyno test/tune these motors like you guys are?
https://www.amainhobbies.com/gforce-...SABEgI81fD_BwE
I use a similar version and it’s really only good for setting your timing. Unless your willing to spend a few thousand dollars the correct timing is most important info. Some motors are spot on with endbell and internal timing, some aren’t.
I think it’s a worthwhile investment for less than $100. I didn’t realize how some motors internal and external timing was way off. You could have the same 2 17.5’s from same company and timing could be allot different between the two. Also, if you switch between a 12.3 and 12.5, the differences in internal and external timing can be way off like 8 degrees
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Last edited by idbdoug; 12-15-2017 at 09:00 AM.
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Old 12-15-2017, 11:44 PM
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Default 7.5 starting fdr

Hi guys, is there any of u guys have an experience running with 7.5 motor? id like to know a good starting fdr for it if i was to run it in blinky mode TC on road. the track size where im running would be 90x45. thanks guys!
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Old 12-16-2017, 04:45 AM
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Originally Posted by Yolks_r55 View Post
Hi guys, is there any of u guys have an experience running with 7.5 motor? id like to know a good starting fdr for it if i was to run it in blinky mode TC on road. the track size where im running would be 90x45. thanks guys!
That's quite an unusual combination. 7.5T is kinda slow for mod TC (especially in blinky mode), while it certainly doesn't fit any stock (blinky) class I've ever heard of either. Do the other guys you're racing with use similar combinations? Otherwise, you will probably find yourself off pace, even with a fitting FDR for that setup. Anyway, personally, I'd probably start at something like... (wow, this is difficult)... 6.5-7.0ish FDR, and then start measuring temps.
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Old 12-16-2017, 07:45 AM
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Originally Posted by DirkW View Post
That's quite an unusual combination. 7.5T is kinda slow for mod TC (especially in blinky mode), while it certainly doesn't fit any stock (blinky) class I've ever heard of either. Do the other guys you're racing with use similar combinations? Otherwise, you will probably find yourself off pace, even with a fitting FDR for that setup. Anyway, personally, I'd probably start at something like... (wow, this is difficult)... 6.5-7.0ish FDR, and then start measuring temps.
LOL. thanks Dirk for the reply. 6.5-7.0 is what i have in mind as well. at my local track 13.5, 10.5, 4.5, 5.5 motors all have about the same fast lap time in mod class (open motor) since the track isn't big enough. my motor is geared 7.6-7.8 right now and I'm trying to find out if i can get around the track faster with blinky set up and 6.5-7.0fdr maybe add just a lil bit turbo timing if needed for the straight. thanks!
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Old 12-20-2017, 05:18 AM
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Aluminium timing and stator screws should be in by end of the month
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Old 12-21-2017, 08:36 AM
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I have the 21.5 V15 motor with the 12.5 rotor. I use it for usgt. Is it worth to upgrade to the 1750 12.5 rotor? Is it compatible? Or should I just up my pinion till it temps out at 150ish or buy the v16. Any help is appreciated
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Old 12-21-2017, 12:37 PM
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what timing are y'all running on the V16 with upgraded 1700 rotor in 2wd buggy? i think i have it around 52. motor is fast. i have it geared low, but i literally can't heat this thing up. highest it's ever been is about 95 degrees. last week i ran it at a cold, outdoor facility and it was coming off around 78 degrees after a full pack of practice. running it indoors last night it was coming off around 88 degrees. again, the motor is fast, but i'm just wondering if i'm leaving some power on the table.
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Old 12-21-2017, 12:51 PM
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Stay at or under 55* max. It’ll hit a wall and go inefficient beyond that.

52 is decent especially if it’s quick and cool!
I find they start waking up at 48* and above.
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Old 12-21-2017, 01:30 PM
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Does anyone know the what the size of high torque rotor option for the 25.5 is?
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Old 12-21-2017, 02:46 PM
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https://r1wurks.com/collections/moto...ion-12-3-rotor
Originally Posted by qcrc View Post
Does anyone know the what the size of high torque rotor option for the 25.5 is?
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Old 12-24-2017, 06:56 AM
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Any ETA when more of the 80mm Servos will be restocked?
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Old 12-30-2017, 12:19 AM
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Noticed my esc does data logging. Cannot do pictures now??? But info that could be observed. 13.5. Max current 67. Max watts 552. Max rpm 30656. Max motor temp 142. Max esc temp 123.(fan taken off esc). But whatever. Update. I compared my #s with some info I could find. Max amps seems impressive. Saw some other motors maxing out around 45a. The watts are about as much as a 6.5??? Rpms are around 9.5t ish. Does that all seem about right?. My fast lap was .4 slower than fastest. Was faster than buds new max 13.5. But ya whatever.

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Old 12-30-2017, 04:44 PM
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Originally Posted by iTz Nicholas72 View Post
Any ETA when more of the 80mm Servos will be restocked?
I do not believe there is an eta at this time, but last I checked tqrcracing.com had them in stock.
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